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Kon-Tiki refers to Scout and Guide raft building competitions held by Scouts South Africa and Scouts Australia. [1] Named after Thor Heyerdahl's Kon-Tiki expedition of 1947, teams of Scouts and Guides age 11 to 17 compete to build and live on a raft for a weekend. Support crews compete in other events while the raft is afloat.
Floating raft is a land-based building foundation that protects it against settlement and liquefaction of soft soil from seismic activity. It was a necessary innovation in the development of tall buildings in the wet soil of Chicago in the 19th century, when it was developed by John Wellborn Root who came up with the idea of interlacing the concrete slab with steel beams.
Shallow foundations of a house versus the deep foundations of a skyscraper. Foundation with pipe fixtures coming through the sleeves. In engineering, a foundation is the element of a structure which connects it to the ground or more rarely, water (as with floating structures), transferring loads from the structure to the ground.
Rafting to Vancouver, British Columbia Canada (August 2006). Raftsmen in Northern Finland in the 1930s Timber rafting on the Willamette River (May 1973).. Timber rafting is a method of transporting felled tree trunks by tying them together to make rafts, which are then drifted or pulled downriver, or across a lake or other body of water.
Construction workers who leave the pressurized environment of the caisson must decompress at a rate that allows symptom-free release of inert gases dissolved in the body tissues if they are to avoid decompression sickness, a condition first identified in caisson workers, and originally named "caisson disease" in recognition of the occupational ...
Raft building is one of the oldest maritime technologies. Throughout history, reed rafts have been constructed in almost every part of the world where reeds have grown, most notably in regions near the Mediterranean, in South America and Easter Island. Today, only a handful of places still practice the ancient art of reed raft construction.
The first version put into service was a Bailey Pontoon and Raft with a 30 feet (9.1 m) single-single Bailey bay supported on two pontoons. A key feature of the Bailey Pontoon was the use of a single span from the bank to the bridge level which eliminated the need for bridge trestles.
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